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Application of electromechanical impedance for damage assessment of composite power boat
Author(s): Tomasz Wandowski; Rohan Soman; Paweł Malinowski; Wiesław Ostachowicz; Bartosz Puchowski
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Paper Abstract

In this paper idea of load and structural health monitoring (LSHM) system for assessment of composite powerboat has been presented. One of the structural health assessment method utilised in this system is electromechanical impedance (EMI). Authors have presented results related to influence of load and temperature on EMI method. EMI method is based on electromechanical coupling of piezoelectric transducer (PZT) with host structure. Due to this coupling, mechanical resonances of structure can be seen in electrical impedance characteristic of PZT. According to the literature EMI method is sensitive to change of loads in the structure and to changing temperature. Influence of changing operation and environmental conditions should be eliminated by compensation algorithms in order to reduce risk of false alarms in damage assessment system. Results of research related to simple specimen experienced the influence of changing temperature and transverse load and EMI method have been presented. Strains at bending condition for beam have been measured using fibre Bragg grating strain sensors. Some preliminary results of measurements related to powerboat have been also presented and discussed. Measurements have been related to self-diagnosis of piezoelectric transducers using EMI method and to measurements of accelerations using MEMS accelerometer.

Paper Details

Date Published: 1 April 2019
PDF: 10 pages
Proc. SPIE 10972, Health Monitoring of Structural and Biological Systems XIII, 109720D (1 April 2019); doi: 10.1117/12.2513273
Show Author Affiliations
Tomasz Wandowski, The Szewalski Institute of Fluid-Flow Machinery (Poland)
Rohan Soman, The Szewalski Institute of Fluid-Flow Machinery (Poland)
Paweł Malinowski, The Szewalski Institute of Fluid-Flow Machinery (Poland)
Wiesław Ostachowicz, The Szewalski Institute of Fluid-Flow Machinery (Poland)
Bartosz Puchowski, CreeYacht (Poland)

Published in SPIE Proceedings Vol. 10972:
Health Monitoring of Structural and Biological Systems XIII
Paul Fromme, Editor(s)

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